‘Learning’ system added. MailWasher Pro users now have the option to use
Firetrust’s Bayesian filtration system to smartly identify spam based on comparison
with prior–marked spam emails.
New ‘Learning’ Spam Tool added (CTRL – T, then select ‘Learning’).
Filters / Blacklist backup system added. Backups are stored in the MailWasher Pro
application data directory.
MailWasher Pro’s preview window will now display some foreign character sets
correctly. This is a work in progress and more character set support will be added
in the near future.
Blue checkmarks have been added to blacklist and friends list columns to match
the Learning column indicating emails already in those lists
Firetrust officially launches the FirstAlert! system to the public. FirstAlert! account
numbers & passwords are now included as part of the registration key for version
4.0 users and above.
New help system added.

Important Changes And Fixes:

Windows XP standby crash has been fixed.
Incorrect summary numbers that were being displayed after message logs
are cleared have been fixed
Removed duplicate sound event entries & changed the default sound to notify.wav
IMAP Sessions now escape " in passwords and enclose passwords in " marks.
POP3 should ignore POP servers that abort TOP listing during the headers if some
of the headers were actually listed.
filters.txt now has comments at the top.
Double bubble icon problem & notification sound events should now be resolved.
Issue where mousing over the preview window would steal focus from other
applications should be resolved.
Fixed string formatting issue on Blacklist Autodelete warning.
Changed Statistics file format and added functionality to import and use old format
logs.
European format numbers that weren’t sorting right in the size column should now
display correctly.
Read only files in the application directory no longer prevent crash log directories
from being pruned.
Autodeletes that occasionally failed when a delete was queued to a session that
was quitting should be fixed.
Fixed interface issue with the Restore Email function where MailWasher Pro would
display the wrong message for emails that were completely restored.
The Pie Graphs in the statistics form will now use the user defined filter colours
when displaying filters.
Improved Hotmail Error handling.
Fixed caption error when user attempts to add duplicate filters.
If flagged to load on startup MailWasher Pro will now place a shortcut in the user’s
startup menu rather than in the registry.
SelectMailClient changed to take into account user settings as well as machine
settings.
Quick Reply now works around bug in Pegasus Mail. Pegasus Mail users will be
limited to a small number of quoted characters.
H237 bugs caused by autodelete in combination with Show Hidden emails fixed.
Fixed a bug where new mail notification would only occur for emails without
visibility.
Fixed an issue where emails that were deleted by a third party application would
get stuck in MailWasher Pro (IMAP sessions only).
MailWasher Pro now renames duplicate filter names when loading filters from disk.
Whitelist can now import Eudora email addresses that have the form:
"Dummy Address" <someone@somewhere.com>
Fixed the bug that caused the ‘Quick Reply’ feature to crash MailWasher Pro when
used with no mail selected.
Fixed a bug where new stats wouldn't show up after the stats had been cleared
until MailWasher Pro was restarted.
Statistics graphs now use uniform length numbers in legend.
i.e. 9.38% is now 09.38%.
Exception errors in Friends List import form should have been fixed.
The accounts form is no longer shown the first time the user runs MailWasher Pro,
as this can be selected from the setup wizard.
Logging now goes straight to disk and holds nothing constantly in memory in order
to stop unnecessary memory bloat when debugging is on.
Fixed lockup when sorting on SpamCop / Reporting columns.
Extended logging is now switched off if previously enabled. Users experiencing
problems with version 4.0 should enable extended logging once more.
Disabled the combining of SpamCop and FirstAlert! report column.
Tweaked logging to stop MailWasher Pro attempting to copy temp files into the final
debug log when extended logging enabled
Fixed doubling up issue in logs.
Made statistics progress bar behave far more sensibly.

Miscellaneous:

Changed the Regular Expression link on the about form
Added version number to the title bar of the main MailWasher Pro screen.
The Status column is now the default sort column.
Users can now move the position of the Delete column.
MailWasher Pro now accepts and processes 20 digit registration keys.